steam spinning of nylon

例句：

1. 1. Thesteam from the kettle is rising upto meet the cold air.
   水壶里的蒸汽正上升，与冷空气相遇。
2. 2. Steamed buns are a popular breakfast choicein China.
   蒸馒头是中国早餐的热门选择。
3. 3. The steamer was designed to keepfood fresh and prevent spoilage.
   蒸汽器的设计是为了保持食物新鲜，防止变质。